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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 865 · 40 questions
TalentJR

Remember (Digit, digit, zeros): black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ω; yellow-violet-brown = 470 Ω; red-red-red = 2200 Ω = 2.2 kΩ.

NameDateTime takenScore ___ / 40
  1. 1.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) green-orange-brown (b) green-orange-orange (c) orange-green-red (d) green-orange-red
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-black-black (b) green-black-black (c) blue-green-black (d) green-black-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) orange-grey-black (b) grey-orange-brown (c) grey-orange-black (d) white-orange-black
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-orange (b) green-red-brown (c) green-red-red (d) red-green-red
  16. 16.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-grey-black (b) grey-white-black (c) white-grey-black (d) grey-grey-brown
  19. 19.🌈 In the resistor colour code, which number does yellow stand for?
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-orange (b) green-red-red (c) red-green-brown (d) red-green-red
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-orange (b) red-brown-red (c) brown-black-red (d) brown-black-brown
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) blue-brown-black (b) brown-green-black (c) green-brown-brown (d) green-brown-black
  28. 28.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 1.7
  3. 1
  4. 32
  5. 6
  6. 9
  7. 260
  8. 620
  9. green-orange-red
  10. green-black-black
  11. grey-orange-black
  12. 2
  13. 60
  14. 41
  15. green-red-red
  16. 340
  17. 5 %
  18. grey-grey-black
  19. 4
  20. 5
  21. red-green-red
  22. brown-black-red
  23. 8
  24. 130
  25. 99
  26. 5.2
  27. green-brown-black
  28. 96
  29. 400
  30. 98
  31. 47
  32. 4.2
  33. 31
  34. 800
  35. 3.1
  36. 72
  37. 650
  38. 9000
  39. 31000
  40. 24000

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